﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp3
{
    class Circle:Shape//圆形
    {
        private double radius;//半径
        public double Redius { get; set; }
        public void GetArea(double num1)
        {
            double area = 0;
            area = 3.14 * num1 * num1;
            Console.WriteLine("半径{0}的圆形面积是：{1}",num1,areas);
        }
    }
}
